cc: Implement deadline scheduling disabled by default

cc/scheduler/frame_rate_controller.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/scheduler/frame_rate_controller.h"
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "base/location.h"
 #include "base/logging.h"
@@ skipping 58 matching lines @@
 BeginFrameArgs FrameRateController::SetActive(bool active) {
   if (active_ == active)
     return BeginFrameArgs();
   TRACE_EVENT1("cc", "FrameRateController::SetActive", "active", active);
   active_ = active;
 
   if (is_time_source_throttling_) {
     base::TimeTicks missed_tick_time = time_source_->SetActive(active);
     if (!missed_tick_time.is_null()) {
       base::TimeTicks deadline = NextTickTime();
-      return BeginFrameArgs::Create(missed_tick_time,
-                                    deadline,
-                                    interval_);
+      return  BeginFrameArgs::Create(
+          missed_tick_time, deadline + deadline_adjustment_, interval_);
     }
   } else {
     if (active)
       PostManualTick();
     else
       weak_factory_.InvalidateWeakPtrs();
   }
 
   return BeginFrameArgs();
 }
@@ skipping 19 matching lines @@
   DCHECK(active_);
 
   // Check if we have too many frames in flight.
   bool throttled =
       max_swaps_pending_ && num_frames_pending_ >= max_swaps_pending_;
   TRACE_COUNTER_ID1("cc", "ThrottledCompositor", task_runner_, throttled);
 
   if (client_) {
     // TODO(brianderson): Use an adaptive parent compositor deadline.
     base::TimeTicks frame_time = LastTickTime();
-    base::TimeTicks deadline = NextTickTime() + deadline_adjustment_;
-    client_->FrameRateControllerTick(
-        throttled,
-        BeginFrameArgs::Create(frame_time, deadline, interval_));
+    base::TimeTicks deadline = NextTickTime();
+    BeginFrameArgs args = BeginFrameArgs::Create(
+        frame_time, deadline + deadline_adjustment_, interval_);
+    client_->FrameRateControllerTick(throttled, args);
   }
 
   if (!is_time_source_throttling_ && !throttled)
     PostManualTick();
 }
 
 void FrameRateController::PostManualTick() {
   if (active_) {
     task_runner_->PostTask(FROM_HERE,
                            base::Bind(&FrameRateController::ManualTick,
@@ skipping 28 matching lines @@
 }
 
 base::TimeTicks FrameRateController::LastTickTime() {
   if (is_time_source_throttling_)
     return time_source_->LastTickTime();
 
   return base::TimeTicks::Now();
 }
 
 }  // namespace cc